JPS5910915A - Optical circuit parts - Google Patents

Optical circuit parts

Info

Publication number
JPS5910915A
JPS5910915A JP11964082A JP11964082A JPS5910915A JP S5910915 A JPS5910915 A JP S5910915A JP 11964082 A JP11964082 A JP 11964082A JP 11964082 A JP11964082 A JP 11964082A JP S5910915 A JPS5910915 A JP S5910915A
Authority
JP
Japan
Prior art keywords
optical fiber
optical
fiber
lines
optical fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11964082A
Other languages
Japanese (ja)
Inventor
Tokihiko Masuzawa
増沢　時彦
Shigeru Inouchi
井内　滋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP11964082A priority Critical patent/JPS5910915A/en
Publication of JPS5910915A publication Critical patent/JPS5910915A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

PURPOSE:To reduce uneven distribution and coupling loss by providing at least two lines of optical fiber and at least three coupling parts, and connecting one end of at least the two lines of optical fiber to the one coupling part and the other end of the one line of optical fiber to the remaining coupling parts. CONSTITUTION:The coupling part 2 of an optical fiber A is an incident side and the coupling parts 2, 2 of optical fibers B1, B2 are an exit side. Seven lines of optical fibers are bundled in the optical fiber 1 in the part 2 on the transmission side, and these lines of fiber are branched in the midway so that the three lines of fiber are disposed on the exit side of B1 and the four lines of fiber on the exit side of B2. If optical fibers for transmission are connected to the incident side A similarly to B2 and incident light is assumed to be transmitted thereto, the light is branched to two by the fiber 1, by which the one of the light is branched to the exit side of B1 and the other to the exit side of B2. The branching of the incident light in this case is surely accomplished by the fiber 1, and the coupling loss is reduced considerably.

Description

【発明の詳細な説明】 本発明は、光ファイバーを用いた光回路部品に関するも
のである。なお、本発明における光回路部品とは、一方
から入射した光を他方へ伝送する際に分岐したり、ミキ
シングしたりするために用いるものを総称しており、例
えば光分岐器、光カプラあるいは方向性結合器等を包含
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical circuit component using optical fibers. Note that the optical circuit components in the present invention are a general term for those used for branching or mixing when transmitting light incident from one side to the other, such as optical branchers, optical couplers, or direction This includes sexual couplers, etc.

従来より光フアイバー通信の回路部品とて用いられてい
る光分岐器や光カプラは、紫外線あるいは電子線硬化型
樹脂等により、光導波路を形成して光の分岐路とするも
の、光ファイバーを加工し側面を密接させて分岐させた
もの、光ファイバーの端面相互を突き合せて分岐させた
ものまたは中間にミキシング作用を有するミキシング部
を配設させたもの等が知られている。Optical splitters and optical couplers, which have traditionally been used as circuit components for optical fiber communications, are those that form optical waveguides with ultraviolet or electron beam curing resin to form optical branching paths, and those that process optical fibers. There are known optical fibers in which the sides are brought close together and branched, those in which the end faces of the optical fibers are brought into contact with each other and branched, and those in which a mixing section having a mixing function is disposed in the middle.

しかしながらいずれの場合にも精密な加工技術が要求さ
れ、生産性を高めることが困難であるばかりでなく、接
合部や導波部等における光の損失が大きくなるといつ難
点を有していた。However, in either case, precise processing techniques are required, and not only is it difficult to increase productivity, but there are also problems when light loss increases at junctions, waveguides, etc.

本発明はこのような状況に鑑み、光ファイバーを用いる
ことに着目してなしたもので、その要旨とするところは
、少な−くとも２本の光ファイバーと、少なくとも３個
の光フアイバー結合部とを備えたものであって、１つの
光フアイバー結合部には少なくとも２本の光ファイバー
の一端が接続されており、残りの光フアイバー結合部に
は少なくとも１本の光ファイバーの他端が接続されてい
ることを特徴とする光回路部品にある。In view of this situation, the present invention has been made by focusing on the use of optical fibers, and its gist is to connect at least two optical fibers and at least three optical fiber coupling parts. One end of at least two optical fibers is connected to one optical fiber coupling part, and the other end of at least one optical fiber is connected to the remaining optical fiber coupling part. This is an optical circuit component that is characterized by:

以下、本発明を実施例の図面に従って説明するが、第１
図ないし第４図は第１の実施例を示し、第５図および第
６図は第２の実施例、さらに第７図および第８図は第３
の実施例を示すものである。The present invention will be described below with reference to drawings of embodiments.
4 to 4 show the first embodiment, FIGS. 5 and 6 show the second embodiment, and FIGS. 7 and 8 show the third embodiment.
This is an example of the following.

まず第１の実施例について説明すると、図中（１）が光
ファイバーで、本発明のすべての実施例では７本構成の
光ファイバーを用いている。この埋山は光ファイバー（
１）を集束したとき、７本が円形として安定しやすい最
小単位であるからであるが、この光ファイバー（１）の
本数は２本以上であれば目的に応じて適宜増減してもよ
い。また図中（２）は金属やプラスチックからなる光フ
アイバー結合部で、本発明の場合少なくとも３個必要で
あり、第１図では３個の例が示されている。この元ファ
イバー結合部（２）は、金属板等で形成されているノ・
ウジング（４）にそれぞれ貫通孔をもった内おねじ（２
１）と外おねじ（２３）が固着されており、内おねじ（
２１）には貫通孔をもった押えめねじ（２３）が螺合さ
れ、これによって光ファイバー（１）を接続するように
なっている。なお、図中（３）は光ファイバー（１）の
端部に嵌合したフェルール、（８）はその際に用いた接
着剤層である。また（５）は受光用光ファイバーで、端
部にはフェルール（７）が嵌合されており、貫通孔つき
の押えめねじ（６）が光フアイバー結合部（２）の外め
ねじ（２３）に螺合して、光ファイノ＜−（１）と突き
合うようになっている。勿論本発明の使用に際しては、
図示は省略しているが他２つの外めねじ（２３）には送
光用光ファイバーおよび受光用光ファイノ（−が同様に
して接続される。First, the first embodiment will be described. In the figure, (1) is an optical fiber, and in all the embodiments of the present invention, seven optical fibers are used. This buried mountain is an optical fiber (
This is because seven optical fibers (1) is the smallest unit that is likely to be stable as a circular shape when focused, but the number of optical fibers (1) may be increased or decreased as appropriate depending on the purpose as long as it is two or more. Further, (2) in the figure is an optical fiber coupling part made of metal or plastic, and in the case of the present invention, at least three are required, and an example of three is shown in FIG. This original fiber coupling part (2) is made of a metal plate or the like.
Internal male screws (2) each with a through hole in the housing (4)
1) and the outer male thread (23) are fixed, and the inner male thread (
A retaining female screw (23) having a through hole is screwed into the optical fiber (21), thereby connecting the optical fiber (1). In the figure, (3) is the ferrule fitted to the end of the optical fiber (1), and (8) is the adhesive layer used at that time. In addition, (5) is an optical fiber for receiving light, a ferrule (7) is fitted to the end, and a retaining female screw (6) with a through hole is connected to an external female screw (23) of the optical fiber coupling part (2). They are screwed together and come into contact with the optical fiber <-(1). Of course, when using the present invention,
Although not shown, a light transmitting optical fiber and a light receiving optical fiber (-) are similarly connected to the other two external female screws (23).

上記実施例は主として光分岐器として用いられるが、（
５）の光フアイバー結合部（２）が入射側となり、（Ｂ
、）、　（Ｂａ）の光フアイバー結合部（２）、　（２
）が出射側となる。送光側の光フアイバー結合部（２）
の光ファイバー（１）は、第４図の通り７本が集束され
ており、これらが途中で分岐されて、（Ｂａの出射側に
３本、また（Ｂ２）の出射側に４本配されている。いま
入射側（Ｎに（Ｂ２）と同様にして送光用光ファイノく
−が接続されて入射光が送られたとすると、光ファイノ
く−（１）により２つに分岐され、一方が（Ｂ１）の出
射側に、また他方が（Ｂ２）の出射側に分岐されること
となる。したがってこの際の入射光の分岐は、光ファイ
バー（１）によって確実に行なうことができ、結合損を
極めて小さくすることが可能である。ちなみに直径０．
２５　ｍ＋ｎの光ファイノ（−「エスカ」（三菱レイヨ
ン社製アクリル系系光ファイツク−）を７本用いて製作
した光分岐器の結合損を測定したところ、（Ｂ＋　）、
（Ｂｔ）における結合損はそれぞれ１．２ｄＢであった
。The above embodiment is mainly used as an optical splitter, but (
The optical fiber coupling part (2) of 5) is on the incident side, and (B
, ), (Ba) optical fiber coupling part (2), (2
) is the output side. Optical fiber coupling part on the transmitting side (2)
Seven optical fibers (1) are converged as shown in Fig. 4, and these are branched in the middle, three on the Ba output side and four on the output side of (B2). Now, suppose that the light transmitting optical fiber is connected to the incident side (N) in the same way as in (B2) and the incident light is sent, then the optical fiber is branched into two by the optical fiber (1), one of which is The other side is branched to the output side of (B1), and the other is branched to the output side of (B2).Therefore, the branching of the incident light at this time can be reliably performed by the optical fiber (1), and the coupling loss can be reduced. It is possible to make it extremely small.By the way, the diameter is 0.
When we measured the coupling loss of an optical splitter made using seven 25 m+n optical fibers ("ESCA" (acrylic optical fiber manufactured by Mitsubishi Rayon Co., Ltd.), we found that (B+),
The coupling loss in (Bt) was 1.2 dB, respectively.

なお、ここでいう結合損は次式で求められた値である。Note that the coupling loss referred to here is a value determined by the following formula.

−１０１ｏｎｔｏ　ｘ（分配比） 第５図および第６図は本発明の第２σ）実施例な示すも
ので、この場合は片側に７個ずつσ）光フアイバー接続
部（２）を有する光カプラである。図面では中間の４個
の光ファイノく御粘合部を省略して（・るが、光ファイ
バー（１）は同様７本構成となっており（第６図８照）
、入射側（Ａ山（Ａ２）・・・（Ｎ、）力・らそれぞれ
１本ずつ出射側（Ｂｔ）　、　（Ｂ２）、・・・（Ｂ７
）へ分配され、個々の出射側では７本ずつ集束されても
・る。-101 onto x (distribution ratio) Figures 5 and 6 show the second σ) embodiment of the present invention, in which case an optical coupler having seven σ) optical fiber connections (2) on each side. be. The connecting parts of the four optical fibers in the middle are omitted in the drawing, but the optical fiber (1) has the same seven-strand configuration (see Figure 6, 8).
, one each on the input side (mount A (A2)...(N,) force, etc., on the output side (Bt), (B2),...(B7)
), and seven beams are focused on each output side.

したがって、各党ファイノく御粘合部（２）における光
ファイバー（１）は、すべて第６図のような状態となっ
ている。Therefore, all the optical fibers (1) in the connecting parts (2) of each fiber are in a state as shown in FIG.

このようにして得た本発明の光カプラを上記第１の実施
例と同様にして性能評価したところ、入射光を７分岐し
たときの分配ムラはｏ３ｄＢ　　と少なく、またこのと
きの結合損も１．１　ｄＢと少なく、きわめて良好なも
のであった。When the performance of the thus obtained optical coupler of the present invention was evaluated in the same manner as in the first embodiment, the distribution unevenness when the incident light was split into seven branches was as small as o3 dB, and the coupling loss at this time was also 1 It was as low as .1 dB, which was extremely good.

第７図および第８図は本発明の第３の実施例を示すもの
であるが、この例は上記第２の実施例を変形した光カプ
ラに係るものである。すなわち、この実施例では８個の
光ファイノく御粘合部と、７本の光ファイノ’−ｔｌ）
トラＪｌ−・、光ファイノ（−ｔｌ）の両端を、それぞ
れ光ファイノく御粘合部（２）に接続している。したが
ってこの例の場合、（・ずれ力′−１個の光フアイバー
結合部（２）を入射側とし、他７個を出射側として用い
るときは、入射光を均等に７つに分配できることとなる
。なお、こσ）光カフ゛うについて上記２つの実施例と
同様にして性能評価を行なったところ、分配ムラが０．
３ｄＢ、結合損が１．２ｄＢ　と極めて良好なものであ
った。7 and 8 show a third embodiment of the present invention, and this example relates to an optical coupler that is a modification of the second embodiment. That is, in this embodiment, there are eight optical fibers and seven optical fibers.
Both ends of the optical fiber (-tl) and the optical fiber (-tl) are connected to the optical fiber coupling part (2), respectively. Therefore, in this example, if (・sheer force'-1 optical fiber coupling part (2) is used as the input side and the other 7 are used as the output side, the incident light can be equally distributed to 7 parts. When the performance of this σ) optical field was evaluated in the same manner as in the above two examples, it was found that the distribution unevenness was 0.
The coupling loss was 3 dB and the coupling loss was 1.2 dB, which was extremely good.

上記の実施例においては、アクリル系の光ファイバーを
用いているが、本発明ではこのような光ファイバーに限
定されるものではなく他のプラスチック系光ファイバー
やガラス系あるいは石英系の光ファイバーが使用できる
。In the above embodiment, an acrylic optical fiber is used, but the present invention is not limited to such an optical fiber, and other plastic optical fibers, glass-based optical fibers, or quartz-based optical fibers can be used.

本発明は以上の如き構成からなるものであるから、製造
が容易で分岐比や分配比を任意に選定することができる
と共に、各結合部が光ファイバーで接続されているため
に、分配ムラや柿′合績・を可及的に小さくして、優れ
た光回路部品を゛潰供することができる利点がある。Since the present invention has the above-mentioned configuration, it is easy to manufacture and the branching ratio and distribution ratio can be arbitrarily selected, and since each coupling part is connected with an optical fiber, distribution unevenness and persimmon There is an advantage in that excellent optical circuit components can be provided by minimizing the total cost as much as possible.

【図面の簡単な説明】[Brief explanation of drawings]

第１図ないし第４図は本発明の第１の実施例を示すもの
で第１図は光回路部品の横断断面図、第２図は第１図■
−■線の端面図、第３図は第１図ＩＩＩ　−１■線の端
面図、第４図は第１図ＩＶ−ＩＶ線の端面図、第５図お
よび第６図は本発明の第２の実施例を示すもので、第５
図は光回路部品の横断断面図、第６図は第５図■−■線
の端面図、第７図および第８図は本発明の第３の実施例
を示すもので、第７図は光回路部品の横断断面図、第８
図は第７図ｖｍ　−ｖｍ線の端面図である。 （１）・・・光ファイバー （２）・・・光フアイバー結合部 （３）・・・フェルール （４）・・・ハウジング 特許出願人　　　　三菱レイヨン株式会社Ｌ５　図 尾６　図 旙呆ベノ一 本７　図 乳ａ図1 to 4 show a first embodiment of the present invention. FIG. 1 is a cross-sectional view of an optical circuit component, and FIG. 2 is a cross-sectional view of an optical circuit component.
3 is an end view taken along line -1 in FIG. 1, FIG. 4 is an end view taken along line IV--IV in FIG. This example shows the fifth embodiment.
The figure is a cross-sectional view of an optical circuit component, FIG. 6 is an end view taken along the line ■-■ in FIG. 5, and FIGS. 7 and 8 show a third embodiment of the present invention. Cross-sectional view of optical circuit components, No. 8
The figure is an end view taken along the vm-vm line in FIG. 7. (1) Optical fiber (2) Optical fiber coupling part (3) Ferrule (4) Housing Patent applicant Mitsubishi Rayon Co., Ltd. L5 Figure 6 Figure 6 Figure 7 breast a figure

Claims (1)

【特許請求の範囲】[Claims] 少なくとも２本の光ファイバーと、少なくとも３個の光
フアイバー結合部とを備えたものであって、１つの光フ
アイバー結合部には少なくとも２本の光ファイバーの一
端が接続されており、残りの光フアイバー結合部には少
なくとも１本の光ファイバーの他端が接続されているこ
とを特徴とする光回路部品。A device comprising at least two optical fibers and at least three optical fiber coupling parts, wherein one optical fiber coupling part has one end of at least two optical fibers connected to the remaining optical fiber coupling parts. An optical circuit component characterized in that the other end of at least one optical fiber is connected to the other end of the optical fiber.
JP11964082A 1982-07-09 1982-07-09 Optical circuit parts Pending JPS5910915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11964082A JPS5910915A (en) 1982-07-09 1982-07-09 Optical circuit parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11964082A JPS5910915A (en) 1982-07-09 1982-07-09 Optical circuit parts

Publications (1)

Publication Number Publication Date
JPS5910915A true JPS5910915A (en) 1984-01-20

Family

ID=14766448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11964082A Pending JPS5910915A (en) 1982-07-09 1982-07-09 Optical circuit parts

Country Status (1)

Country Link
JP (1) JPS5910915A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0262407U (en) * 1988-10-27 1990-05-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0262407U (en) * 1988-10-27 1990-05-10

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